Quarter	US dollars
1999-03-31	63
1999-06-30	30
1999-09-30	29
1999-12-31	62
2000-03-31	55
2000-06-30	44
2000-09-30	39
2000-12-31	45
2001-03-31	42
2001-06-30	46
2001-09-30	45
2001-12-31	37
2002-03-31	33
2002-06-30	42
2002-09-30	46
2002-12-31	63
2003-03-31	58
2003-06-30	31
2003-09-30	24
2003-12-31	28
2004-03-31	49
2004-06-30	48
2004-09-30	25
2004-12-31	12
2005-03-31	14
2005-06-30	14
2005-09-30	4
2005-12-31	4
2006-03-31	6
2006-06-30	6
2006-09-30	5
2006-12-31	10
2007-03-31	26
2007-06-30	27
2007-09-30	8
2007-12-31	44
2008-03-31	7
2008-06-30	8
2008-09-30	8
2008-12-31	6
2009-03-31	4
2009-06-30	5
2009-09-30	23
2009-12-31	9
2010-03-31	12
2010-06-30	11
2010-09-30	22
2010-12-31	14
2011-03-31	11
2011-06-30	9
2011-09-30	13
2011-12-31	15
2012-03-31	10
2012-06-30	7
2012-09-30	4
2012-12-31	6
2013-03-31	10
2013-06-30	12
2013-09-30	8
2013-12-31	14
2014-03-31	6
2014-06-30	8
2014-09-30	9
2014-12-31	8
2015-03-31	6
2015-06-30	55
2015-09-30	57
2015-12-31	85
2016-03-31	87
2016-06-30	81
2016-09-30	96
2016-12-31	81
2017-03-31	83
2017-06-30	81
2017-09-30	76
2017-12-31	92
2018-03-31	71
2018-06-30	64
2018-09-30	67
2018-12-31	58
2019-03-31	77
2019-06-30	53
2019-09-30	64
2019-12-31	74
2020-03-31	49
2020-06-30	25
2020-09-30	33
2020-12-31	33
2021-03-31	63
2021-06-30	62
2021-09-30	93
2021-12-31	90
2022-03-31	95
2022-06-30	56
2022-09-30	74
2022-12-31	117
2023-03-31	128
2023-06-30	116
2023-09-30	109